This afternoon I had a (very rare) nap. During that nap I had a lucid dream (most of which I no longer remember). As I was waking up, I was thinking about my dream and thought that it would be a great idea to write a list about dreams for the site. So, here are the top 10 amazing facts about dreams.

• 10. Blind People Dream

People who become blind after birth can see images in their dreams. People who are born blind do not see any images, but have dreams equally vivid involving their other senses of sound, smell, touch and emotion. It is hard for a seeing person to imagine, but the body’s need for sleep is so strong that it is able to handle virtually all physical situations to make it happen.

• 9. You Forget 90% of your Dreams

Within 5 minutes of waking, half of your dream if forgotten. Within 10, 90% is gone. The famous poet, Samuel Taylor Coleridge, woke one morning having had a fantastic dream (likely opium induced) – he put pen to paper and began to describe his “vision in a dream” in what has become one of English’s most famous poems: Kubla Khan. Part way through (54 lines in fact) he was interrupted by a “Person from Porlock“. Coleridge returned to his poem but could not remember the rest of his dream. The poem was never completed.

In Xanadu did Kubla Khan
A stately pleasure-dome decree:
Where Alph, the sacred river, ran
Through caverns measureless to man
Down to a sunless sea.
[…]

Every human being dreams (except in cases of extreme psychological disorder) but men and women have different dreams and different physical reactions. Men tend to dream more about other men, while women tend to dream equally about men and women. In addition, both men and women experience sexually related physical reactions to their dreams regardless of whether the dream is sexual in nature; males experience erections and females experience increased vaginal blood flow.

• 7. Dreams Prevent Psychosis

In a recent sleep study, students who were awakened at the beginning of each dream, but still allowed their 8 hours of sleep, all experienced difficulty in concentration, irritability, hallucinations, and signs of psychosis after only 3 days. When finally allowed their REM sleep the student’s brains made up for lost time by greatly increasing the percentage of sleep spent in the REM stage. [Source

• 6. We Only Dream of What We Know

Our dreams are frequently full of strangers who play out certain parts – did you know that your mind is not inventing those faces – they are real faces of real people that you have seen during your life but may not know or remember? The evil killer in your latest dream may be the guy who pumped petrol in to your Dad’s car when you were just a little kid. We have all seen hundreds of thousands of faces through our lives, so we have an endless supply of characters for our brain to utilize during our dreams.